Theory of Operation

Clock Oscillator. You can select either the internal or external reference clock source by using the SETUP horizontal menu.

If you select the external source, the reference signal connected to the 10 MHz

REF In connector on the rear panel will be used.

The internal clock is from the reference clock oscillator, which uses direct digital synthesis (DDS). Figure 3±2 shows the clock oscillator configuration.

Trigger Control. The Trigger Control block controls the Memory Address Control in the operation mode that you specified from the RUN MODE menu.

Waveform Memory and Shift Register. The Waveform Memory block has 8 bits for waveform data and 2 bits per channel for markers, thus a total length of 16 M /32 M (option 01) points. You can set any value from 960 points to 16 M/32 M (option 01) points for the length of the waveform data. It must be in increments of 4.

The Shift Register block provides waveform data from the DAC at a rate of up to 4.0 GS/s.

RUN modes. Selecting a RUN mode from the SETUP menu causes one of the following modes to operate the AWG710 Arbitrary Waveform Generator. Table 3±1 lists the available run modes.

Table 3-1: Run modes

Modes

Descriptions

 

 

Continuous

Consecutively output reg￿rdless of existence of ￿ trigger sign￿l.

 

 

Triggered

The output sign￿l is obt￿ined once only when one of the following is input:

 

￿ An extern￿l trigger sign￿l from the TRIG IN connector on the re￿r p￿nel.

 

￿ A trigger sign￿l gener￿ted using the FORCE TRIGGER button on the front

 

p￿nel.

 

￿ A trigger comm￿nd from remote device.

 

￿ If the SEQUENCE h￿s been defined, the TRIGGERED output is obt￿ined

 

once only ￿ccording to the definition.

 

 

3-4

AWG710 Service Manual